add license in wip

Author: cjcchen

DISCLAIMER-WIP

@@ -1,5 +1,5 @@
-Apache ResilientDB (incubating) is an effort undergoing incubation at the Apache
-Software Foundation (ASF), sponsored by the Apache Incubator PMC.
+Apache ResilientDB is an effort undergoing incubation at the Apache Software
+Foundation (ASF), sponsored by the Apache Incubator PMC.
 
 Incubation is required of all newly accepted projects until a further review
 indicates that the infrastructure, communications, and decision making process
@@ -8,3 +8,27 @@ have stabilized in a manner consistent with other successful ASF projects.
 While incubation status is not necessarily a reflection of the completeness
 or stability of the code, it does indicate that the project has yet to be
 fully endorsed by the ASF.
+
+Some of the incubating project’s releases may not be fully compliant with ASF policy.
+For example, releases may have incomplete or un-reviewed licensing conditions.
+What follows is a list of known issues the project is currently aware of
+(note that this list, by definition, is likely to be incomplete):
+
+1. The source code is distributed under the Apache License, Version 2.0. However
+building ResilientDB requires using a transitive required library 
+glog-0.5.0, leveldb-1.23, gtest-1.13.0, gflag-2.2.2, which is under BSD-3-Clause License,
+eEVM (https://github.com/microsoft/eEVM) which is under MIT licenses,
+and protobuf-3.10.0 (https://github.com/protocolbuffers/protobuf),
+snappy-1.1.9 (https://github.com/google/snappy),
+zlib-1.2.11 (https://github.com/madler/zlib),
+pybind-2.11.1 (https://github.com/pybind/pybind11_bazel),
+nlohmann_json-3.9.1 (https://github.com/nlohmann/json),
+CrowCpp-1.0-5 (https://github.com/CrowCpp/Crow),
+Asio-1-26-0 (https://github.com/chriskohlhoff/asio),
+Prometheus-cpp-1.0.1 (https://github.com/jupp0r/prometheus-cpp),
+Cryptopp-8-7-0 (https://github.com/weidai11/cryptopp),
+which hereby disclaims copyright to their source code
+
+If you are planning to incorporate this work into your product/project,
+please be aware that you will need to conduct a thorough licensing review
+to determine the overall implications of including this work.

WORKSPACE

@@ -140,8 +140,6 @@ http_archive(
     ],
 )
 
-#prometheus cpp client library
-
 http_archive(
     name = "com_google_leveldb",
     build_file = "@com_resdb_nexres//third_party:leveldb.BUILD",